Dust-collector for rock-drills.



F. RYLANDER.

DUST COLLECTOR FOR ROCK DRILLS.

APPLIGATION FILED 14111.17, 1914.

1,131,009. Patented Mar.9, 1915.

2 SHEETSSHEET 1.

amvcmioc F. RYLANDER.

DUST COLLECTOR FOR. ROCK DRILLS.

APPLICATION FILED MAR.17, 1914.

1,131,009. Patented M3129, 1915.

2 SHEETS-SHEET 2.

4 6 u mw 2W E a/7% THE NORRIS PETERS c0., PHOTO-LITHQ, WASHING ION. D. c.

UNITED STATWNT oFrIoE. v

FRANK RYLANDER, or DUMONT, COLORADO.

DUST-COLLECTOR FOR ROCK-DRILLS Specification of Letters Patent.

Patented Mar. 9, 1915';

Application filed March 1'7, 1914. Serial No. 825,278.

To all whom it may concern: I

Be it known thatI, FRANK'RYLANDER, citizen of the United States, residing at Dumont, county of Clear Creek, and State of Colorado, have inventedcertainnew and useful Improvements in Dust-Collectors for Rock-Drills; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the'accompanying drawings, and, to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in dust collectors for rock drills, my object being to provide a device of this character containing several improvements over con-v structions heretofore employed. My construction is of theclass in which a dust col lecting hood surrounding the drill hole and engaging the breast of the rock is held in place independently of the drill, as by a standard which is connected with the hood at one extremity, while its other extremity engages the bottom of the tunnel or other suitable stationary support. I

One novel feature of my improvement consists in making the standard hollow and using it as a conduit through .which the dust or rock cuttings entering the hood from the drill hole, pass downwardly and are discharged at the lower extremityof'the standard, which is open for thepurpose. The bottom or lower extremity of the hood consists of a disk which is engaged by one extremity of a spiral spring whose opposite extremity bears against a relatively large ring into which the outer extremity of the hood is formed, the material or fabric of the hoodbeing turned back upon itself and secured and the loop thus formed being filled with a packing of some suitable material. This ring at the outer extremity of the hood forms a seat for one extremity of the spiral spring, which acts thereon to maintain the hood closely against the breast of the rock to prevent the escape of cuttings in the form of dust. The difficulty of allowing the rock:

cuttings to escape in the formof dust is well understood, since it is impossible for Workmen to long endure without serious injury, the breathing of air contaminated with this dust, as it gradually injures the lungs and finally brings on tuberculosis. The disk at the bottom of the hood is provided with an opening which is surrounded by an in wardly projecting collar, while the bottom of the disk is reinforced and circumferentially grooved to receive a flange formedon the top of a sleeve which has a swivel connection with the disk by virtue of this reinforcement. The drill steel passes through this sleeve, which is provided with an opening shaped to conform to the general shape of thesteel whereby the sleeve rotates with the drill steel while the latter turns freely in the rigid bottom of the hood. :Within the sleeve and surrounding the drill steel, is a gasket or bushing which is heldin place, by a second sleeve exteriorly threaded to engage the interior threads of the first named sleeve. The second sleeve is screwed tightly against the gasket to form a dust tight joint around the drill steel. .By v-ir-' tue ofthis construction'the drill steel, to-

gether with the two sleeves and the. gasket, I

blow is delivered, in order to prevent "the steel from sticking in the drill hole. By

virtue of the construction. just described, the'drill steel is allowed to perform" this operation and still maintain a .dusttight joint wherehit passes through the bottom of the hood.

Having briefly outlined myv improved construction, I will proceed to describe the same in detail, reference being made to the accompanying drawing, in which is illustrated an embodiment thereof.

.In this drawing, Figure 1 is an elevation of a rock drill equipped with my improved dust collector, thebreast of the rock being shown in section cutting the drill. hole, the drill bit being shown in place. Fig. 2 is a fragmentary sectional view of the same construction but shown ona larger scale. Fig.

3 is a cross section taken through the hood on the line 3.3, Fig. 2.- Fig. 4 is a section taken on the line M, Fig. 2, looking upwardly, or in the direction of the arrowgt, Fig. 5 is a fragmentary section Fig. 2.

taken on the line 55, Fig; 3, illustrating one of the fastening devices for securingthe spring to the disk of the hood. Fig. 6 1s .a'

This View is obtained 'by look Fig. 7 is a section taken on the line 7-.7, Fig. 6. Fig- 8 is a plan view of the gasket or bushing employed in connection with the swiveled sleeve for making a tight joint around the drill steel. Fig. 9 is a section taken on the line 99, Fig. 8.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate the hood of my improved device whose body portion is.

composedof canvas 6 or some other suitable flexible material. The outer extremity of the fabric of the-hood is formed into a circular loop or :hollow ring 7, which is filled with a packing material 8 which is sufficiently yielding to fit the breast 9 of the rock closely around the drill hole 10, regardless of. ordinary irregularities, in order to prevent the escape'of the rock cuttings at the breast of the rock, where they leave the drill hole.

The lower extremity of the fabric 6 of thehood is secured as shown at 12,. to the outer edge of the disk 13, which constitutes tremity-of the hoodis located a spiral spring,

17, which is under sufiicient tension to hold the outer extremity of the hood tightly against the breast of the rock, when the hood is held in place by a suitable support. The disk or bottom of the hood is provided at one side of its center with an opening 18 which is surrounded by an interior-1y pro-- jecting collar 19 through which the drill steel 20 passes. To the lower surface of the disk .13 is applied the upper extremity 21 of a sleeve 22, its outer extremity being' equipped with an exteriorly projecting flange 23which engages a groove 24: of counterpart shape formed in a reinforcement 25, applied to the lower surfaceof the disk. This sleeve extends downwardly through an opening 26 in the reinforcement 25 and in its upper part is located a gasket or bushing 27, composed of some suitable soft or elastic material, which is held in place by means of a second sleeve 28 which is exteriorly threaded to engage the interior threads of the first named sleeve. The sleeve 28 is screwed into a sleeve 22 and forced tightly against the gasket 27 whereby the latter is expanded both out- Wardly and inwardly to form a disk tight joint around the drill steel. By virtue of this construction the two sleeves 22 and 28,

together with the gasket and "drill steel, are i allowed to rotate in order that the partial rotary movement of rthe drill steel within the hood may be accomplished without'in terfering with the proper performance of The hood is supported in place against the breast of the rock by means of a:- hollow standard 29, which consists of two telescoping parts 30 and 31, saidparts being lengthwise: adjustableand locked in the desired position 'ofadjustment by means of a set screw 32 passing through an; opening 33 formed in the reinforced-upper extremity 84C 1 of the standard member 51.v The lower extremity of this standardis pointed as shown at 35, inorder that it may be easily caused to indent the rock for the purpose of maintaining the standard securely in place when adjusted with reference tothe drill mechanism, the latter being designated by the numeral 36. (See Fig. 1).

As illustrated in the drawing, thezdisk is provided with a relatively short depending tubular member 87, whose upper extremity tightly into the upper reinforced extremity 39 of the upper member 36 of the standard. By virtue of this construction the standard may be readily detached from the member 37 by simply loosening the set screw 32 and moving the member 29 downwardly into the a .70 the dust collection function of the structure.

"9O is made fast to the disk ancl"\vhose-lower; extremlty is tapered as shown at 38 to fit member 31 far enough.to.accomplish this PllI'POSB- In order to tightly secure the spring against the disk of the hood, the disk is provided with fastening devices 40 which as illustrated in thedrawing, consist of short stems 41 which pass through openings. 42 formed in the outer edge of the disk and passing also through registering openings 48 formed in the disk reinforcement 25.

This stem passes below the reinforcement and is threaded as shown at 44.- to receive a fastening nut 45. The upper extremity of the stem. is equipped with a part 46 extending at right angles to the stem and slightly concaved at its outer extremity as shown at 47-, to engage the lowermost convolution e8 of the spring. As illustrated in the drawing, two of these fastening 1 devices are shown, though it is evident that any other desired number may be employed. When.

the upper extremityof the fastening; device is properly adjusted upon the lowermost convolution of the spring; it is securedin place bytightening the nut 45. It 'alsois evident that by loosening this nut,'the fastening device may be quickly adjusted to release the spring.

From the foregoing description, the use and operation of 'my -improved construction will be readily understood. Assuming that 11 thehood issupported in place -1' againstithe breast of the rock and that the drilling machine is mounted substantially as illustrated in Fig. 1, the drill steel being passed through the hood and the gasket, compressed by the sleeve 28 to form a tight joint around the drill steel, as the drill operates, the rock cuttings from the drill hole are passed downwardly into the hood and pass thence through the tubular member 37 into the hollow standard and downwardly therethrough and escape at the opening 49 of the lower extremity of the standard and located just above the pointed end thereof. The rock cuttings, after being guided downwardly through the standard, will quietly pass therefrom through the opening 49 without forming any dust. In this manner, the impregnation of the air by the dust resulting from the rock cuttings is obviated and the difficulty heretofore explained, overcome.

Having thus described my invention, what I claim is,

1. A dust collector for rock drills, comprising a hood and supporting standard connected with the hood and formed hollow to permit the escape of the rock cuttings.

2. A dust collector for rock drills, comprising a hood having a shoulder at its outer extremity, a rigid bottom and an expanding spring located between the bottom and the shoulder, the bottom having an opening through which the drill steel passes and a second opening for the escape of the rock cuttings, and a supporting standard communicating with the bottom of the hood and having a passage registering with the second opening for guiding the rock cuttings downwardly therethrough.

3. A dust collector for rock drills, comprising a hood having a shoulder at its outer extremity, a rigid bottom and an expanding spring located between the bottom and the shoulder, the bottom having an opening through which the drill steel passes and a second opening for the escape of the rock cuttings, and a supporting standard communicating with the bottom of the hood and having a passage registering with the second opening for guiding the said rock cuttings downwardly therethrough, the bottom being also provided with a collar projecting therefrom inwardly around the drill steel to prevent the rock cuttings from entering the bottom opening through which the steel passes.

4. A dust collector for rock drills, comprising a hood having a shoulder at its outer extremity, a rigid bottom, an expanding spring located between the bottom and the shoulder, the bottom having .an opening through which the drill steel passes, the said opening being surrounded by an inwardly projecting collar, the bottom also having a second opening for the escape of the rock cuttings, an exteriorly located sleeve swiveled on the bottom of the hood and having an opening shaped to approximately 'fit the drill steel and rotatable therewith, while allowing the steel to pass freely therethrough in the direction of its axis, a gasket located within the sleeve and also surrounding the drill steel, and a second sleeve threaded into the first sleeve and acting on the gasket to form a dust tight joint around the drill steel.

5. A dust. collector for rock drills, comprising a hood having a shoulder at its outer extremity, a rigid bottom, an expanding spring located between the bottom and the shoulder, the bottom having an opening through which the drill steel passes, said opening being shaped to allow the drill steel to rotate therein as well as pass therethrough, and a second opening for the escape of the rock cuttings, means applied exteriorly to the bottom of the hood to form a dust tight joint, the said means being rotatable with the drill steel, and a hollow supporting standard connecting with the bottom of the hood to alloW the rock cuttings to enter as they pass through the second opening in the bottom, substantially as described.

6. A dust collector for rock drills, comprising a hood composed of flexible material and whose outer edge is reinforced to form a ring of considerable cross sectional area, a disk to which the other extremity of the flexible fabric is applied, and an expanding spring located between the disk and the outer reinforced extremity of the hood, the bottom having an opening through which the drill steel passes and in which it moves freely both longitudinally and rotatably, means for forming a dust tight joint around the drill steel comprising an exteriorly located sleeve swiveled on the disk which is reinforced for the purpose, the sleeve having an opening through which the drill steel passes, said opening being shaped to conform approximately to the cross sectional area of the steel, a gasket located in the sleeve, surrounding the drill steel, and shaped to fit the same, a second sleeve threaded into the first named sleeve and adapted to engage the gasket, whereby the latter is expanded both interiorly and exteriorly to form a dust tight joint, the bottom of the hood having a second opening for the escape of the rock cuttings, and a tubular member applied to the bottom and arranged to receive the cuttings which pass through the said opening, and a hollow standard applied to the said tubular member and adapted to guide the rock cuttings downwardly therethrough, for the purpose set forth.

7. A dust collector for rock drills, comprising a hood composed of flexible material and whose outer edge is reinforced to form a ring of considerable cross sectional area, a disk to which the other extremity of the flexible fabric is applied, and an expanding spring located between the disk and the outer reinforced extremity of the hood, the bottomfhaving an opening through which the drill steel passes and in which it moves freely both longitudinally and rotatably, means for forming a dust tight joint around the drill steel comprising an exteriorly located sleeve swiveled on the disk which is reinforced for the purpose, the sleeve having an opening through which the drill steel.

passes, said opening being shaped to conform approximately to the cross sectional.

area of the steel, a gasket located in the sleeve, surrounding the drill steel, and shaped to fit the same, a second sleeve threaded into the first named sleeve and adapted to engage the gasket, whereby the latter is expanded both interiorly and exteriorly to form a dust tight joint, the bottom of the hood having a second opening for the escape of the rock cuttings, and a tubular member applied to the bottom and arranged to receive the cuttings which pass through the said opening, and a hollow standard applied to the said tubularmember and adapted to guide the rock cuttings downwardly therethrough, the said standard being lengthwise adjustable to compensate for variations in height between the breast of the rock and the bottom of the drift or tunnel.

8. A dust collector for rock drills, comprising a hood. composed of flexible material and whose outer edge is reinforced to form a ring of considerable cross section. area, a disk to which the other extremity of the flexible fabric is applied, and an expanding spring located between the disk and the outer reinforced extremity of the hood, the bottom having an opening through which the drill steel passes and in which it moves freely both longitudinally and rotatably, means for forming a dust tight joint around the drill steel comprising an exteriorly located sleeve swiveled on the disk which is reinforced for the purpose, the sleeve having an opening through which the drill steel passes, said opening being shaped to conform approximately to the cross sectional area of the steel, a gasket located. in the sleeve, surrounding the drill steel, and shaped to fit the same, a second sleeve threaded into the first named sleeve and adapted to engage the gasket whereby the latter is expanded both interiorly and exteriorly to form a dust tight joint,the bottom of the hood having a second opening for the escapeof the rock cuttings, and a tubular member applied to the bottom and arranged to receive the cuttings which pass through the said opening, and a hollow standard applied to the said tubular member and adapted to guide the rock cuttings,- downwardly therethrough, the said standard consisting of two telescoping members to permit longitudinal adjustment to vary the height of the standard and means for securing thetwo standard parts in the adjusted steel. comprising an exteriorly located sleeve swiveled on the disk which is reinforced for the purpose, the sleeve having an opening through which the drill steel passes, said opening being shaped to conform approximately to the cross sectional area of the steel, a gasket located in the sleeve, surrounding thedrill steel, and shaped to fit the same, a second sleeve threaded into the firstnamed sleeve and adapted to engage the gasket, whereby the latter is expanded both interiorly and exteriorly to form a dust tight joint, the bottom of the hood having a second. opening for the escape of the rock cuttings, and a tubular member applied to the bottom and arranged to receive the cuttings which pass through the said opening, and a hollow standard applied to the said tubular member and adapted to guide the rock cuttings downwardly therethrough, the said standard having a bottom opening for the escape of the rockv cuttings.

In testimony whereof I aliix my signature in presenceof two witnesses.

FRANK RYLANDER.v Witnesses:

CARL ENGLUND, JOHN A. ECKSTEDT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Tatents,

Washington, D. C. 

